The assertion is false: the soft iron core not only makes the field radial but also concentrates the magnetic field lines, thereby increasing the magnetic field strength. The reason is also false: in a moving coil galvanometer with a radial field, the plane of the coil is always parallel to the magnetic field (not perpendicular), so that the torque remains constant for all positions. Hence both Assertion and Reason are false. The correct option is (D).